I thought they stopped the cowl blackout something during 70 production.
All paint colors other then black and dark blue were "supposed" to receive the rad support blackout. Another area that was supposed to be blacked out were the rocker pinch welds. This is a pet peeve of mine. The pinch welds are very ugly and stick out like a sore thumb when they are left body color. The factory could have sprayed or brushed black paint on the pinch weld area.